8.5.5 Expat error constants

The following constants are provided in the errors object of
the xml.parsers.expat module. These constants are useful
in interpreting some of the attributes of the ExpatError
exception objects raised when an error has occurred.

The errors object has the following attributes:

XML_ERROR_ASYNC_ENTITY

XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF

An entity reference in an attribute value referred to an external
entity instead of an internal entity.

XML_ERROR_BAD_CHAR_REF

A character reference referred to a character which is illegal in XML
(for example, character 0, or `&#0;').

XML_ERROR_BINARY_ENTITY_REF

An entity reference referred to an entity which was declared with a
notation, so cannot be parsed.

XML_ERROR_DUPLICATE_ATTRIBUTE

An attribute was used more than once in a start tag.

XML_ERROR_INCORRECT_ENCODING

XML_ERROR_INVALID_TOKEN

Raised when an input byte could not properly be assigned to a
character; for example, a NUL byte (value 0) in a UTF-8 input
stream.

XML_ERROR_JUNK_AFTER_DOC_ELEMENT

Something other than whitespace occurred after the document element.

XML_ERROR_MISPLACED_XML_PI

An XML declaration was found somewhere other than the start of the
input data.

XML_ERROR_NO_ELEMENTS

The document contains no elements (XML requires all documents to
contain exactly one top-level element)..

XML_ERROR_NO_MEMORY

Expat was not able to allocate memory internally.

XML_ERROR_PARAM_ENTITY_REF

A parameter entity reference was found where it was not allowed.

XML_ERROR_PARTIAL_CHAR

An incomplete character was found in the input.

XML_ERROR_RECURSIVE_ENTITY_REF

An entity reference contained another reference to the same entity;
possibly via a different name, and possibly indirectly.

XML_ERROR_SYNTAX

Some unspecified syntax error was encountered.

XML_ERROR_TAG_MISMATCH

An end tag did not match the innermost open start tag.

XML_ERROR_UNCLOSED_TOKEN

Some token (such as a start tag) was not closed before the end of the
stream or the next token was encountered.

XML_ERROR_UNDEFINED_ENTITY

A reference was made to a entity which was not defined.

XML_ERROR_UNKNOWN_ENCODING

The document encoding is not supported by Expat.

XML_ERROR_UNCLOSED_CDATA_SECTION

A CDATA marked section was not closed.

XML_ERROR_EXTERNAL_ENTITY_HANDLING

XML_ERROR_NOT_STANDALONE

The parser determined that the document was not ``standalone'' though
it declared itself to be in the XML declaration, and the
NotStandaloneHandler was set and returned 0.

XML_ERROR_UNEXPECTED_STATE

XML_ERROR_ENTITY_DECLARED_IN_PE

XML_ERROR_FEATURE_REQUIRES_XML_DTD

An operation was requested that requires DTD support to be compiled
in, but Expat was configured without DTD support. This should never
be reported by a standard build of the xml.parsers.expat
module.

XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING

A behavioral change was requested after parsing started that can only
be changed before parsing has started. This is (currently) only
raised by UseForeignDTD().

XML_ERROR_UNBOUND_PREFIX

An undeclared prefix was found when namespace processing was enabled.

XML_ERROR_UNDECLARING_PREFIX

The document attempted to remove the namespace declaration associated
with a prefix.

XML_ERROR_INCOMPLETE_PE

A parameter entity contained incomplete markup.

XML_ERROR_XML_DECL

The document contained no document element at all.

XML_ERROR_TEXT_DECL

There was an error parsing a text declaration in an external entity.

XML_ERROR_PUBLICID

Characters were found in the public id that are not allowed.

XML_ERROR_SUSPENDED

The requested operation was made on a suspended parser, but isn't
allowed. This includes attempts to provide additional input or to
stop the parser.

XML_ERROR_NOT_SUSPENDED

An attempt to resume the parser was made when the parser had not been
suspended.

XML_ERROR_ABORTED

This should not be reported to Python applications.

XML_ERROR_FINISHED

The requested operation was made on a parser which was finished
parsing input, but isn't allowed. This includes attempts to provide
additional input or to stop the parser.